Delphinidin 3 o galactoside chloride

All chemicals and solvents used were of analytical grade. Methanol (LC‐MS grade) was purchased from Fisher Scientific (Loughborough, UK), trifluoroacetic acid and chloroform (HPLC grade) from Sigma‐Aldrich Chemical Co. (St. Louis, MO, USA), gallic acid from Fluka Biochemika (Stockholm, Sweden), hydrochloric acid from Acros Organics (Germany), and formic acid from Scharlau (Barcelona, Spain).
Anthocyanin standards cyanin chloride, malvin chloride, malvidin‐3‐O‐glucoside chloride, peonidin chloride, petunidin‐3‐O‐glucose chloride, cyanidin‐3‐O‐glucoside chloride, malvidin chloride, cyanidin chloride, delphinidin chloride, cyanidin‐3‐O‐arabinoside chloride, delphinidin‐3‐O‐galactoside chloride, and peonidin‐3‐O‐glucoside chloride were all purchased from Extrasynthese (Genay, France).

All chemicals and solvents used were of analytical grade. Methanol (LC-MS grade) was purchased from Fisher Scientific (Loughborough, UK), trifluoroacetic acid and chloroform (HPLC grade) from Sigma-Aldrich Chemical Co. (St. Louis, MO, USA), hydrochloric acid from Acros Organics (Schwerte, Germany), formic acid from Scharlau (Barcelona, Spain), glycerol and citric acid from Sigma-Aldrich (Darmstadt, Germany), Tween 20 from Sigma-Aldrich (Saint Quentin Fallavier, France), sucrose from Eridania Italia SPA (Bologna, Italy) and trehalose from Exacta-Optech Labcenter SPA (San Prospero, Italy). Pepsin from porcine gastric mucosa, pancreatin from porcine pancreas, bile extract from porcine and alfa-amylase from Bacillus sp. were purchased from Sigma-Aldrich (Stockholm, Sweden), and chitosan from mushrooms was provided by Agrovin (Alcazar de San Juan, Spain).
Anthocyanin standards (cyanidin-3,5-di-O-glucoside chloride, malvidin-3,5-diglucoside, malvidin-3-O-glucoside chloride, petunidin-3-O-glucose chloride, cyanidin-3-O-glucoside chloride, cyanidin-3-O-arabinoside chloride, delphinidin-3-O-galactoside chloride, and peonidin-3-O-glucoside chloride) were all purchased from Extrasynthese (Genay, France).